The name comes originally from Yochanan 'God is great' in Hebrew, and is one of the most common names in all of the Western World. Here is how the name appears in various languages:
Hebrew: Yochanan
Ancient Greek: Ioannes
Latin: Johannes
English: John
Dutch: Johannes, Hannes, Hans
German: Johannes, Johann, Johan, Jan, Hans
Danish: Johannes, Johan, Jon, Jan, Jens, Hans, John
Norwegian: Johannes, Johan, Jon, Jan, Hans
Swedish: Johannes, Johan, Jon, Jan, Hans
Icelandic: Jóhannes, Jóhann, Jón
Cornish: Jowan
Manx: Ean
Scottish: Eoin, Iain, Ian
Irish: Eoin
Welsh: Iefan, Ifan, Evan
Breton: Yann
French: Jean
Spanish: Juan
Portuguese: João
Catalan: Joan
Galician: Xoán
Italian: Giovanni, Gianni
Romanian: Ioan, Ion
Basque: Ion, Jon
Finnish: Jani, Joni, Jouni, Juha, Juhana, Juhani, Juho, Jukka, Jussi
Hungarian: Jani, János
Estonian: Jaan
Latvian: Janis
Lithuanian: Jonas
Russian: Ivan
Ukrainian: Ivan
Bulgarian: Ioan
Croatian: Ivo, Ivan
Serbian: Jovan, Ivan
Slovene: Yanez
Macedonian: Jovan
Polish: Iwan, Jan
Czech: Ivan, Jan, Johan
Slovak: Ivan, Jan
Albanian: Gjon
Greek: Ioannes, Ioannis
Armenian: Hovannes
Esperanto: Johano
Hawaiian: Keoni
Niuean: Sione